An integer that indicates the MDA card type that is physically
inserted into this slot in this chassis. If the slot has been
pre-provisioned, tmnxMDAAssignedType is not equal 'unassigned',
and the value of tmnxMDAEquippedType is not the same as
tmnxMDAAssignedType, a mis-match alarm will be raised.
A value of 0 indicates the equipped MDA is not supported by
this software release.